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为了提高冀北地区白菜生产上灌溉水的利用效率,在膜下滴灌条件下,以常规滴灌(白菜全生育期滴灌8次)为对照(CK),在白菜主要生育期设置不同的灌水次数,试验设白菜全生育期内灌水4、5、6和7次4个节水灌溉处理,灌水量均为240 m3/(hm2·次),研究了不同节水灌溉条件下白菜地上地下生长质量、产量和耗水量的变化,以筛选与CK地上地下生长质量和产量均基本相当条件下的最省水灌溉方式。结果表明:白菜全生育期滴灌5次(苗期1次,团棵期1次,结球期3次)效果较好。该处理的灌水定额仅为CK的62.5%,但白菜根鲜重、叶球紧实度和产量与CK差异不大,且耗水量明显减少。
In order to improve the utilization efficiency of irrigation water in cabbage production in northern Hebei, under the condition of drip irrigation under drip irrigation, conventional drip irrigation (8 times drip irrigation during the whole growth period of cabbage) was used as control (CK), different irrigation times were set up during the main growth period of cabbage, In the experiment, 4, 4, 6, and 7 times of water-saving irrigation were allotted during the whole growth period of cabbage. The irrigation volume was 240 m3 / (hm2 · times). The quality of cabbage under groundwater, Yield and water consumption to screen for the most water-saving irrigation methods under basically equivalent conditions of CK growth and yield. The results showed that: drip irrigation during the whole growth period of cabbage 5 times (1 seedling stage, corm 1 period, 3 knotting stage) is better. The treatment of irrigation quota was only 62.5% of CK, but fresh weight of cabbage, leaf compactness and yield were not significantly different from those of CK, and the water consumption decreased significantly.